Weirdly enough, JPEG-XL support is actually fairly decent in Firefox already and there were patches developed by the community that work well for things such as color profiles, animation support etc. I’ve had them in Waterfox for a few years now - it was a purely “political” decision, if you want to call it that, to stop any more progress until recently.

Firefox Nightly is listed as supported on the jpegxl.info web site. My understanding is that it does not fully support the specification yet which is why it is not released to production.

https://jpegxl.info/resources/supported-software.html

Man this back and forth is really frustrating.

So Google killed XL a while ago already and I feel like either Microsoft or Mozilla at least considered following suit. After Apple has done heic for a while now I assumed it might go that way regarding a jpeg replacement, but now they did a 180 and switched to xl. I mean good, it's not as patent encumbered, but wtf am I supposed to expect for the future now? Will Google add XL back to chrome? I guess it will take another decade or five until we have a jpeg replacement that's being universally agreed upon, because come on, it would be too easy if we don't get another plot twist where a major player jumps onto something else again for a while.